MDCAT Physics MCQ #2547

What is the term for the minimum frequency of light required to eject electrons from a metal surface?

MDCAT Physics MCQ #2547

  1. Question 1

    Q1. What is the term for the minimum frequency of light required to eject electrons from a metal surface?

    • A) Threshold frequency
    • B) Cut-off frequency
    • C) Resonance frequency
    • D) Critical frequency

    Answer: Threshold frequency

    Explanation: Threshold frequency is the minimum frequency required; below this, no electrons are emitted.